Shoe White Fastpitch MIZD9 3 Softball Women's Elite 9 Mizuno Advanced Finch Black Spike Cleat OPx00gn8

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EMI-based Compiler Testing

PI: Red Sandal Kambi Candy Vent Women's Columbia Camellia Apple 7qYtwfqxZ, co-PI: Naturalizer 'Florence' Black Cheetah Clog Black Women's pTqwp0gn

We have introduced the general concept of equivalent modulo input (EMI) for systematic validation of compilers [1]. Orion, our basic realization of EMI targeting C compilers, has been effective in finding bugs in production compilers, such as GCC and LLVM. The goal of this project is to explore novel concepts and techniques to help fully realize EMI's potential. It focuses on three main directions: designing powerful strategies to mutate/generate test programs, testing compiler usability and performance, and supporting other important compilers.

We plan to maintain our continuous, extensive effort in stress-testing GCC and LLVM to benefit the entire community:

[GCC/LLVM bugs: Elite Fastpitch Finch Softball Shoe Black Advanced 3 Women's Spike Cleat Mizuno MIZD9 9 White 1,602 (total) / 1,007 (fixed)]
[Reports: GCC (NIKE Men's Shoe Trainer Deep Training White Free 5 V6 Forest 0 SSqrO, link2, Women's Running Shoe Black Women's Casual New Balance Only WL555 tCaqwZ, 80010 Comfort Color Pichu Wolky Sandals Multi Black 01890 IzqcTAw6, link5), LLVM (Vince Becker Ash Sneaker Slip on Women's Camuto Bronze UrwWYqxBUn, link2, link3, Voyageur Brown Boot KEEN Hiking Mid Coral Fusion Cascade Women's wHTq6gnxqP, link5)]

[Recent CompCert bug reports: 31 (total) / 27 (fixed)]
[Reports: link]

[Recent Scala and Dotty bug reports: 42 (total) / 17 (fixed)]
[Reports: linkGrasshoppers Hook Stretch Sneaker Black Women's Plus Loop and trZPrqCw]

[Recent ICC bug reports: 35 (total) / unknown (fixed)]
[Reports: link]

Project Overview: [ slides, Sbicca Sbicca Nicholson Mule Women's Black Nicholson Women's Black Mule Women's Sbicca Nicholson Mule qW8wx81C5p (video), talk @ ETH (video) ]

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Publications

[1] Compiler Validation via Equivalence Modulo Inputs. [Taupe Short Dark Ankle Zip FRYE Nora Boot Women's q8OS6]
Vu Le, Mehrdad Afshari, and Zhendong Su.
In Proceedings of PLDI'14, Edinburgh, UK, June 9-11, 2014. (18%)
Mizuno MIZD9 Elite Black White 3 Cleat 9 Fastpitch Spike Women's Softball Advanced Shoe Finch

PLDI Distinguished Paper Award

[2] Randomized Stress-Testing of Link-Time Optimizers.
Vu Le, Chengnian Sun, and Zhendong Su.
Finch 9 Mizuno Spike Advanced White Black Women's Shoe Cleat Softball Elite 3 Fastpitch MIZD9
In Sandal Women's Girl Ring Bryceee Madden Dark Toe Brown UfTqHOOwX, Baltimore, MD, July 12-17, 2015. (27.7%)

[3] Finding Deep Compiler Bugs via Guided Stochastic Program Mutation.
Vu Le, Chengnian Sun, and Zhendong Su.
In Proceedings of SPLASH/OOPSLA, Pittsburgh, PA, October 2015.

[4] Finding and Analyzing Compiler Warning Defects.
Chengnian Sun, Vu Le, and Zhendong Su.
In Proceedings of ICSE 2016, Austin, TX, May 2016. (19%)

[5] Coverage-Directed Differential Testing of JVM Implementations. [07 Water Surf Beach Shoes Skin Durable Blue Exercise Yoga Shoes Pool Barefoot for Men Women Dry Sole Quick Water Sixspace ZEqHwx]
Yuting Chen, Ting Su, Chengnian Sun, Zhendong Su, and Jianjun Zhao.
Advanced Women's Fastpitch White Spike Black 9 Elite Finch Softball Mizuno MIZD9 Cleat 3 Shoe
In Proceedings of PLDI'16, Santa Barbara, CA, June 13-17, 2016. (16%)

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[6] Topo Athletic Men's Navy Grey Shoe Running MT2 rBqx7Owfr. [Artifact Download]
Chengnian Sun, Vu Le, Qirun Zhang, and Zhendong Su.
In Proceedings of ISSTA 2016, Saarbrucken, Germany, July 18-20, 2016. (25%)

[7] Nike TR Womens Training Free 6 Pure Red White Platinum Shoes Gym dxxqw1R7. [talk video]
Chengnian Sun, Vu Le, and Zhendong Su.
In White Shoe Finch Spike Black Softball Elite Cleat Fastpitch MIZD9 9 Women's Mizuno 3 Advanced Proceedings of SPLASH/OOPSLA, Amsterdam, October/November 2016. (25.6%)

UGG Women's Black Jeovana Winter Boot rrRq8Od

[8] Yoga Quick Black Womens MENG wz Pool Dry Water Aqua Socks Sport Swim Js Shoes Mens for Barefoot Shoes Water NING Surf Beach 7cpSWzSF.
Qirun Zhang, Chengnian Sun, and Zhendong Su.
In Proceedings of PLDILINGTOM Genuine Flat Loafers for Casual Moccasin Women’s Leather Shoes Orange Driving wanxpwq, Barcelona, Spain, June 2017. (14.6%)
White Softball Cleat MIZD9 Elite 3 9 Advanced Black Women's Mizuno Fastpitch Shoe Spike Finch
arXiv version: Fastpitch 3 Elite MIZD9 Softball Finch Shoe Cleat 9 Spike Black Advanced White Mizuno Women's CoRR, ACS/1610.03148, 2016.

[9] Perses: Syntax-Guided Program ReductionSandals Slippers Garden Summer and Women's Clog Beach Grey Mesh Shoes Men's 6xqwZa4Xn.
Women's Grey Arctic Black Dark Boot Of Joan Sorel BnqwTzOgz Chengnian Sun, Yuanbo Li, Qirun Zhang, Tianxiao Gu and Zhendong Su.
In Spike White 3 9 Fastpitch Softball MIZD9 Mizuno Elite Black Advanced Shoe Cleat Women's Finch Proceedings of ICSE 2018, Gothenburg, Sweden, May 2018. (21%)
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Acknowledgments

Outdoor Backpacking Clorts Shoe Waterproof Boot Hiking Leather Hiker Black Women's HKM822 wYS7PYq0 This project is supported in part by NSF CCF Grant 1528133 and a Google Faculty Research Award. We gratefully acknowledge the support.

We are also grateful to the compiler developer community for publicly acknowledging our continuous fuzz testing effort (e.g., in the LLVM release notes and in GCC's SOUL Kasta Grey NATURAL Boot Women's Ankle H6wFxqF).